flying with budget airlines

Hi, We have just booked a trip to Hungary in May and are flying Easijet, this is the first time that we have flown with a budget airline, and we are finding it a bit confusing, so could anyone give us any advice as regards the rules for luggage allowances, check in etc. I seem to be getting such a lot of conflicting information about these issues, even from the airline themselves !! Many thanks in advance, Liz